POLYMERIC MATERIAL
    21.
    发明专利

    公开(公告)号:CZ174595A3

    公开(公告)日:1996-01-17

    申请号:CZ174595

    申请日:1994-11-16

    Applicant: BAXTER INT

    Abstract: A polymer based composition for fabricating into articles is described. The composition comprises: a polypropylene in an amount by weight from 40-90% of the composition and having a melting temperature greater than 130 DEG C; a radio frequency susceptible polymer in an amount by weight from 5-50% of the composition and having a dielectric loss greater than 0.05 at 1-60 MHz and ambient temperature to 250 DEG C, the susceptible polymer being selected from (1) polymers containing at least one segment selected from the group consisting of urethanes, esters, ureas, imides, sulfones, and amides, and (2) ethylene copolymers having 50-85% ethylene content copolymerized with at least one monomer selected from the group consisting of acrylic acid, methacrylic acid, ester derivatives of acrylic acid with alcohols having 1-10 carbons, vinyl acetate, and vinyl alcohol; a compatibilizing polymer in an amount by weight from 5-30% of the composition, the compatibilizing polymer conferring compatibility between the radio frequency susceptible polymer, and the polypropylene, the compatibilizing polymer being a styrenic block copolymer with hydrocarbon soft segments, and wherein the composition has an optical haze value of less than 30% for the composition processed into a film of about 0.299 mm in thickness measured in accordance to ASTM D-1003, a mechanical modulus of less than 2758x10 Pa when measured according to ASTM D-882 and the composition exhibits no strain whitening after being strained at moderate speeds of about 50 cm per minute to about 100% elongation.

    ESTRUCTURAS DE CAPAS MULTIPLES QUE COMPRENDEN UNA CAPA DE POLI (CLORURO DE VINILIDENO).

    公开(公告)号:MX2009012129A

    公开(公告)日:2010-03-18

    申请号:MX2009012129

    申请日:2008-05-09

    Applicant: BAXTER INT

    Abstract: Se proporcionan estructuras de capas múltiples que comprenden una o más capas de cloruro de poli(vinilideno) y contenedores hechos a partir de las estructuras de capas múltiples. En una modalidad general, la presente descripción proporciona una estructura de capas múltiples que comprende una o más capas de PVDC que comprenden un componente seleccionado del grupo que consiste de un cloruro de poli(vinilideno), un copolimero de cloruro de poli(vinilideno), y combinaciones de los mismos. La estructura de capas múltiples además comprende una o más capas de unión, unidas a la capa de PVDC. La capa de unión comprende un componente seleccionado del grupo que consiste de (a) copolímeros de poliéter-poliéster, (b) poliuretanos que tienen una temperatura de fusión por arriba de aproximadamente 121ºC, (c) una mezcla que comprende una poliamida y un copolímero de etileno conteniendo un grupo funcional reactivo de amina, y combinaciones de los mismos.

    MULTILAYERED POLYMER STRUCTURE FOR MEDICAL PRODUCTS

    公开(公告)号:CA2272430C

    公开(公告)日:2007-06-05

    申请号:CA2272430

    申请日:1998-09-18

    Applicant: BAXTER INT

    Abstract: The present invention provides a multiple layer structure (10) for fabricati ng medical products. The layer structure (10) has a core layer (14) of an ethylene vinyl alcohol copolymer having an ethylene content of about 25-45 mole percent, a solution contact layer of a polyolefin positioned on a first side of the core layer, an outer (12) positioned on a second side of the core layer opposite the solution contact layer (16), the outer layer (12) being selected from the group consisting of polyamides, polyesters and polyolefins; two tie layers (18) - one of each adhered to the first and second sides of the core layer (14) and positioned between the solution contact layer (16) and the core layer (14) and between the outer layer (12) and the core layer (14), an d wherein the structure (10) is produced in a cast coextrusion process.

    MULTI-LAYERED POLYMER BASED MOISTURE BARRIER STRUCTURE FOR MEDICAL GRADE PRODUCTS

    公开(公告)号:CA2395063A1

    公开(公告)日:2001-08-09

    申请号:CA2395063

    申请日:2001-02-07

    Applicant: BAXTER INT

    Abstract: The present invention provides a multiple layer thermoplastic structure of a (1) skin layer selected from the group consisting of polypropylene, ethylene homopolymers having a density of from about 0.930 g/cc to about 0.960 g/cc, and ethylene homopolymers having a density of from about 0.930 g/cc to about 0.960 c/cc blended with an ethylene and .alpha.-olefin copolymers having a density less than about 0.930 g/cc, the skin layer having a thickness of greater than about 3.0 mils; (2) a radio frequency susceptible layer adhered to the skin layer, the radio frequency susceptible layer having a dielectric loss greater than 0.05 at 1-60 MHz and at temperatures of ambient to 250~C, the radio frequency susceptible layer having: (a) a first polyolefin selecte d from the group consisting of polypropylene and polypropylene copolymers, (b) a second polyolefin selected from the group consisting of ethylene copolymers, ultra-low density polyethylene, polybutene, and butene ethylene copolymers; (c) a radio frequency susceptible polymer selected from the group consisting of (i) ethylene copolymers having 50-85 % ethylene content with comonomers selected from a first group consisting of acrylic acid, methacrylic acid, ester derivatives of acrylic acid with alcohols having 1-10 carbons, ester derivatives ofmethacrylic acid with alcohols having 1-10 carbons, vinyl acetate, and vinyl alcohol (ii) homopolymers and copolymers containing at least one segment of urethanes, esters, ureas, imides, sulfones, and amides, and (d) a compatibilizing agent of a styrene and hydrocarbon copolymer; wherein the structure when fabricated into a 50 ml container has a water vap or transmission rate of less than 8 % by weight after the container has been autoclaved at 121~C for 20 minutes and stored for 90 days in an environmentally regulated compartment having 15 % relative humidity at 40~C.

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